Eyeglasses



J. M. VAN HEUSEN.

EYEGLASSES.

APPLICATION FILED FEB. 16. 1921.

Patented. Feb. 21, 1922.

mrao STATES l a I EYEGLASSES.

Specification of Letters latent.

Patented Feb. 21, 1922.

Application filed February 16, 1921. Serial Ref-145,344.

To all whom it may concern:

Be it known that I, JOHN MANNING VAN HEUSEN, a citizen of the UnitedStates, residing at 101 Robinwood Ave, Jamaica Plain, in the county ofSuffolk, State of Massachusetts, have invented certain new and efulImprovementsin Eyeglass s; and I do ereby declare the following t be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention is an improvement in eyeglasses, and relates to that typeof glasses known as -pince-nez, that is the type wherein means engagingthe nose is relied upon to hold the glasses in place.

Glasses of this type often lose their grip upon the nose, due chiefly tothe fact that they have a tendency to slip toward the apex of the nosewhere the guards are incapable of exerting their proper gripping action.This slipping is due mainly to the spring action on the guards, theessentially wedge shape of the nose, and the similarly inclined engagingfaces of the guards, all of which co-act to impart to the guards andglasses, movement toward the apex of the nose, and this tendency isincreased and facilitated by the lubrlcatin qualities of the naturalsecretions of the STKlIl.

Materials having a high coefficient of friction,'as for instance cork,and materials whose engaging faces are roughened to provide increasedfrictional engagement, as for instance tortoise shell, have been used asliners for the guards to prevent the glasses from slipping off the nose,with but slight benefit. If such materials are non-elastic, as forinstance roughened tortoise shell they do not cushion, and pain to thewearer results. If they are elastic and of a cushioning nature, theengaging surfaces of the liners quickly become coated with the naturallubricant of the skin secretions, which increases the tendency to slip,and facilitate such slipping.

One object of the present invention is to provide a liner, which whileserving as a cushioning liner for the guard, will also resist thetendency of the guard to slip on the skin in a direction to dislodge theglasses.

Another object of the invention is to prevent the'above mentionedcreeping action of the glasses so that they will not lose their grip onthe nose.

nother object is to provide glasses of the p1nce-nez type which willfirmly retain their grip on the nose.

In the drawings; I

Figure 1 is a back view of a pair of eyeglasses provided with theimproved guard liners,

Figure 2 is Figure 1,

Figure 3 is a section on the line 3-3 of Fi ure 2,

Figure 4 is an enlarged diagrammatic section showing the arrangement ofthe pile.

Because of the shape of the nose, which is somewhat similar to a pyramidhaving its base downward and its apex upward, inclined surfaces arepresented, which cona section on the line 2-,-2 of verge or inclinetoward each other toward the apex and toward the junction of the saidsurfaces, that is upwardly and outwardly. Glasses of the pince-nez typedo. not tend to slip downward, since to slip downward the guards must beforced apart. ()n the contrary the lasses tend-t9 move upward andoutward, tgat is toward the apex of the pyramid of the nose. In order toresist such upward and outward movement the guards should present anengaging surface with a high coefficient of friction so far as regardsmovement in such direction. It is not necessary however that there beany large amount of frictional resistance toward movement inwardly anddownwardly. ()n the contrary in order that the glasses may hold to thebest advantage, it is desirable that such frictional resistance tomovement in such direction should be as nearly as possible eliminated.

lVith this object in view I provide a liner for the guards of fabricmaterial, having a pile surface on its free face, and with the pilethreads inclined in the same direction with respect to the plane of theguard. The pile of the fabric should be relatively stiff, and for thispurpose I have found a suitable material to be mohair.

In the present embodiment of the invention the improved liners are shownin connection with the guards 1 of a pair of eyeglasses, consistin ofthe uards, the lenses 2 and the nose plece 3. E ach liner is composed ofwarp threads 4, weft threads 5 and pile threads 6. The pile threads areso with respect to the plane of the fabric, and with all the threads ofthe pile inclined in the same direction. The liners which are ofapproximately the same size and shapeas' the guards, are arranged uponthe engaging faces thereof, in such manner that when the glasses areheld in normal position, that is with the nose piece upward, and withthe lenses in substantially a vertical plane, the pile threads willextend vertically. Since the guards are inclined with respect to a planethrough the lenses at an angle of about the pile threads will be at anangle of approximately 45 with respect to the longitudinal axis of theguards. With this arrangement, when the glasses are in place on thenose, the free ends of the pile threads will engage the skin and willresist any tendency of the glasses to move toward .the apex of the nose.The peculiar arrangement in fact tends to seat the glasses more firmlyon the nose. While the guard is shown in connection with glasses havinga resilient nose piece, which is relied upon to provide sufficientpressure to hold the glasses in place, it will be understood that theimproved guards are equall well adapted for use with guards of theSureon t pe, that is with that type of guard movec toward the face by aspring inde pendent from the nose piece.

The improved liners may be attached to the guards in any desired manner,as for inlarger than the guard to lap in this groove, either at itsends, or throughout its c1rcumference. A clamping ring 7 encircles theguard at the groove, and clamps the liner edge within the groove.

claim.

1. In eyeglasses, a guard liner of pile fabric, the pile threads of thefabric being inclined in the same direction with respect to the plane ofthe guard.

:2. In eyeglasses, a guard liner of pile fabric, the pile threads of thefabric being inclined in the same direction with respect to the plane ofthe guard, and in a direction substantially parallel with a planethrough the lenses.

3. Eyeglasses having guards provided with liners of pile fabric, thepile threads of the fabric extendin upwardly and outwardly to resistupward and outward movement of the guards on the nose.

4. Eyeglasses having guards provided with liners of pile fabric, thepile threads being inclined upwardly with respect to the guards when theglasses are in place.

5. Eyeglasses having guards provided with liners of pile fabric)resenting contact filaments inclined upwardly.

6. Eyeglasses having guards provided with liners of pile fabric.

In testimony whereofI afiix my signature JOHN MANNING VAN HEUSEN'

